Transmission mechanism



Sept. 7 1926. 1,599,181

T. H. MEBANE TRANSMI SS ION MECHANI SM Filed March 3l, 1923 3 Sheets-Sheet 1 V l H51 C `HH! Sept. 7 1926.

T. H`. MEBANE TRANSMISSION MEQHANISM 3 Sheets-Sheet 2 Filed March 3l 1923 ll lll.

T. H. MEBANE TRANSMISSION MECHANlSM sept, 7, 1.926. 1,599,181

Patented Sept. 7, 1926A.

lufNflT-ED fsa-Ares Lrn7T-lliv'flff,carillon,.

@norms .MEBANE,

for HoUsronn'raXAs.

'TRANSMISSION .fl'vrncrmnrsivr YApplicaanmffue'd March 31, 1923, v serieu 110.1528389.

T'his invention relates to new and usetul improvements y.in atransmission mechanism. One object of the inventionfis to provide a mechanism of the character 'described (through which jpower may be delivered from a driving to a vdriven member.

:Another obj ect of the invention is to provide a transmission mechanism ofthe charlacter described forl delivering power from Vafdrivingto a driven member .through the medium of Huid under compression.

A still `further feature of the invention` ation and arrangement of parts, an lexample f of whichis given inthis specification. and

illustrated'in the accompanying drawings,

V'wherein:--

Figure'lisa side view ofthe device.` Figure 2`is a'horizontal sectional view.

Figure' 's a vertical sectional view taken Figure 4 4is a fragmentary vertical sectional view showing, in elevation,v onel of the ldriving ldics employed and,

vFigure 5 is a plan view of said disc.

VIn the drawings the numeral vl'designates 'af driving shaft, and the numeral 2 designates a driven shaft. The entire .mechanism is encjlosedby Aa suitable housing B'formedwith end 'bearings 4 and, linzwhich the respective shafts rotate. l:The numeral 6 designates 'atransmission case which is `preferably "formed'of two sectionsformed v'with oppositely 'disposed outwardly turnediangesselcuredftogetherby bolts as: 7 The driven v'shaft lT2 'is secured tothe4 caseiby means of set bolts as "8 or in some other suitable manner, and the respective ends .of `thertransmission case are provided withsuitableanti- 'fiiction bea-rings 9 'fan-d10 for .i the driving shaft 1. Splined-:upnfsaiil driving shaft 'theraisaplurality 9.;driving discs as 11 spaced a siiitableffdis'tance apart and ad- Athe casew, opposite the drivenshaft l2,

Y'fingers 'iacent these discs 11 andsplinedupon said .shaft there are the cams vk12-'arranged ninety degrees apart around the shaft. .Secured to the inner wallo'f the case 6, `and surround- `ing the respective ,driving discs 11,4 are the sectional channels y15 forming between lthem an enclosed annular chamber 14, preferably circular in cross section. These channels are seated inthe channel-like seats 15 `which are boltedto the inner wall of the transmission case `6, as shown more accurately in Figure l, and thevmembers of the sectionalchannels 13 are bolted or otherwisevsecuredtogether, as shown iniFigures'2- and 3. The

periphery cfeach discll 'has a central-,rib 16 which runs vin an internal annulargroove 17 in each channel, andv each discV also has a head 18 which" is circular in cross sectionl and which runs in,"and blocksthe corresponding chamber 14 of the Vadj acent channel 13. The chambers 14 are filled-with Oil vthrough the respective inlet pipes 19'wliose outer ends 'are normally closed by meansjof .l screw plugs v20, as shown in Figuresl and 3. `The heads 18 .of the respective *drivingy discs #11 are aligned with' the adjacent cams 12.

1'Provisionismade for partly or completely blocking the chambers 14' by meansof valves "21, `said valves `working through suit-able stufiing 'boxes as '22, provided in the respective channels 13. Iheouterqend Q f each valveis formed with a hood 23 in which is enclosed the/roller .bearings 24, 24 and -the `valves l also haveyinwardly extending y-stemsj2-i which work throughvthe `case 6 andfthroughsuitable bearings as'26, which farefbolted to the sides'of the channels 13.

v4The inner ends of ,these a stems' are ".formed with heads as l27, 'aligned with'the corresponding cams'12, `and interposed between said `heads and the'bearings .26, `and surrounding said stems .are the coil springsZS,

said springs normally tending to hold .the vvalves in their inward position. 'the chambers 14. .There is a yoke29` formed so as to block collar sur- 'the end of is with anA annular collar i309 said vrounding the sleeve 31 into which formed. The collar '30 Ais formed'with an lannular groove and is vshiftedback and forth ,through the instrumentality Y The yemas-'is .ef a -sabana@nyu-shaped y l of "the l*lever "33 "which, f 'bifurcatefd forming Y the and holding the springs 28 form and works on opposite sides of the case 6, as shown in Figures 1, 2 and 3 and its arms are bifurcated so as'to embrace the valves on each side and the free ends of said arms work through suitable brackets 36, 36 by means of which they are retained in place. These bifurcated arms form tracks for the respective rollers 24, and the valves are controlled by adjusting said tracks through the lever 83.

When the valves are in open or outward position the dri\f*in'g shaft 1 will rotate without transmitting rotation to the driven member for the reason that the heads 18 will encounter no resistance. In this position the anti-friction rollers 24 cam faces 37 of said bifurcated arms 38 thus holding said valves in outward position under compression. The lever 33 may now beactuated to move the yoke 29 outwardly on the sleeve 31, and as said yoke is movedgoutwardly the arms 38 will be correspondingly moved bringing the declining faces 39 underneath the rollers 241, and permitting' the valves to move inwardly under the influence of the sarings 28 andI thus gradually partially bllocking the chambers 14 and oering resistance, through the fluid in said chambers to the heads 18 and thereby imparting rotation from the driving shaft l to the trans` mission case 6, and the driven shaft 2 connected thereto. The lever 33 may be moved further to permit the complete closing of said valves so that they will completely block said chambers and the driven shaft will then rotate simultaneously with Vthe driving shaft. A fluid cushion is thus provided between the driving anddriven members thus minimizing the jar and shock in` cident to change of speed.

When the 'valves 21 are only partly closed the speed of the driven member will be slower than that of the driving'member, the heads or abutments 18 moving around the chambers 14 but at a much slower relative rate of speed than when the valves are completely open. In order to permit these heads or abutments 18 to pass the valves, when the valves are partly closed, the cams 12 have been provided, said cams being in alignment with the corresponding abutments 18 and operating against the stems 25 to lift the valves to permit the abutments to clear. The abutments being proximately ninety degrees apart, on a plane cutting the axis ofthe driving and driven members at a right angle, the abut-- ments pass their respective valves one at a time so that the driving connection between the driving and driven members is not affected as said valves open one at a time for the purpose stated;

Incase the motor is suddenlyl slowed arranged apwill rest upon the secured on said 1. A transmission mechanism including a housing formed with end bearings, a driving and a driven shaft rotatably mounted in the respective bearings, a transmission case within the housing and secured to one cf said shafts, said transmission case beingV formed with a bearing in which the other shaft works, a plurality of driving discs spaced apart and secured on the last mentioned shaft and cams secured on said shaft adjacent the respective discs, channels secured to the wall of the case in alignment with the respective discs and provided with internal annular chambers, an abutment secured to each disc and running in the corresponding chamber, a valve adapted to close each chamber, an inwardly extending stem attached to the outer end of each valve and whose free ends are aligned with the corresponding cams, yieldable members arranged to actuate the respective valves into position to block the corresponding chambers and manual means through which the valves may be actuated into withdrawn positionto unblock said chambers.

2. A transmission mechanism including a transmission case, a shaft to which said case is secured, a shaft rotatable in a bearing carried by said case, a plurality of driving discs spaced apart and secured on said last named shaft within said case and cams shaft adjacent the respective discs, annular members secured to the walls of said case in alignment with the respective discs and each being provided with an internal annular chamber, an abutmen-t carried by each disc and running in the corresponding chamber, a valve adapted to block each chamber, means connected to each valve and disposed to be actuated by the corresponding cam to move the corresponding valve into position to unblock its chamber, yieldable members normally operating through said corresponding means to hold thev valves seated to block their correspondin Achambers and manual means through w ich the valves may be simultaneously actuated.

In testimony whereof I have signed my name to this specification.

rrioMAs' n, f-MEBANE. 

